First, you must find the number of moles of copper that your sample has. This is calculated by #of moles= your sample mass (in grams)/ atomic mass (in grams)
#of moles=68.7g/63.546g
#of moles= 1.08 moles present
Then to find the number of atoms present, we must multiply the number of moles present in the sample with Avogadro's number, which is 6.022x10^23 (this number is the number of atoms present in each mole)
# of atoms present in copper sample=1.08(6.022x10^23)
#of atoms present in copper sample= 6.50x10^23
Hello There!
Conduction is the transfer of heat from one particle of matter to another.
“I Have 3 Examples Of Convection Provided Below”
“A Pot Sitting On A Hot Burner”
“Picking Up A Hot Cup Of Coffee”
“Feet On Hot Sand”
Answer: Anyway, the basic reason why the planets revolve around, or orbit, the Sun, is that the gravity of the Sun keeps them in their orbits. ... If the Sun weren't there, the Earth would travel in a straight line. But the gravity of the Sun alters its course, causing it to travel around the Sun, in a shape very near to a circle
1 mole of CO2 has 6.02 x 10^23 molecules of CO2. Say x moles of CO2 has 3.0x10^23 molecules of CO2. Therefore x = 3/6.02 = 0.50. M = 0.50 * (12 + 2x16) = 0.50 * 44 = 22g
